高清安防视频特征分析缓存系统设计

摘要

In this paper,for high-definition video surveillance system of characteristics analysis present a new video storage solutions, mainly discuss under the needs of large-scale video data,a number of conditions that can be utilized in the video cache based storage so-lutions,including the characteristics of the data stored procedure on disk hardware and the characteristics of the video data stream,then de-sign a full use of these features of the video storage file system,to overcome the disadvantages of common file system in storing high-definition video data and to provide a reliable high-speed cache. The technical details of the solution are described at the end of the paper with some test results. Compared with traditional file systems such as NTFS,the key advantage of this solution is to improve the I/O per-formance under certain application environment of continual storage access.%　　文中针对高清视频监控特征分析系统提出了一种新型视频存储方案，主要讨论了在大规模视频数据的需求下，视频缓存存储解决方案中可以加以利用的一些条件，包括磁盘硬件的数据存储过程特点和视频数据流的特征，设计了一个克服了通用文件系统存储视频的短板且能够充分利用这些特性的视频存储文件系统(简称FMFS)，为高清视频数据提供了一个可靠的高速缓存。最后结合项目情况阐述了方案的技术细节，并根据实验数据，介绍了该解决方案的优势。和NT-FS等传统文件系统相比，其优势在于连续访问存储视频数据的应用场景下的I/O性能得到了较大的提高。